$A$ uniformly charged solid sphere of radius $R$ has potential $V_0$ (measured with respect to $\infty$) on its surface. For this sphere, the equipotential surfaces with potentials $\frac{3V_0}{2}, \frac{5V_0}{4}, \frac{3V_0}{4}$, and $\frac{V_0}{4}$ have radii $R_1, R_2, R_3$, and $R_4$ respectively. Then:

• A
  $R_1 \neq 0$ and $(R_2 - R_1) > (R_4 - R_3)$
• B
  $R_1 = 0$ and $R_2 < (R_4 - R_3)$
• C
  $2R < R_4$
• D
  $R_1 = 0$ and $R_2 > (R_4 - R_3)$